Pipe-bending tool



PIPE BENDING TOOL Filed 001;. 21, 1926 benjamin. C. L ove ridge,

fil

Patented May 14, 1929.

UNITED STATES PATENT OFFICE. j

` BENJAIVIICN CLARK LOVERIDGE, OF DETROIT, MICHIGAN.

PIPE-BENDNG TOOL.

App1ieation led October 21, 1926.

different sizes of pipes.

Another object 1s to provide a lever-operated pipe bender comprising jaws for engaging the pipe to be bent, one of said jaws being applicable to the tool in a plurality o1 positions in which the tool is adapted for handling pipe of diiferent sizes.

1n attaining these objects, the invention contemplates terminally mounting upon a lever a pair of jaws, spaced lengthwise of the lever, between which may be inserted a pipe to be bent, one of said jaws being adapted to rock with respect to the other, during use of the tool, and having surfaces which are dif* ferentially spaced from the other jaw in two alternative positions of use` of said rocking jaw.

These andvarious other objects are attained by the construction hereinafter described, and illustrated in the accompanying drawings, wherein Figure 1 is a view in side elevation of the pipe bender operatively engaging a pipe.

fli`igure 2 is an end View of the` saine.

Figure 3 is a sectional view taken upon line 3 3 of Figure 2, of the rocking jaw in one position of its use, showing an alternative position of such use in dash lines.

In these views, the reference character 1 designates a body carried by a lever 2. Preferably said body is formed with a socket 1a which detachably receives an end of said lever.

rlhc end of said body opposite to that which formed with said socket, has spaced integral projections and f1 thereon, the latter being longer than the former and be ing terminally fashioned to form a hooked jaw 5, spaced from the body 1 and projection 3 in the direction of the axis of the lever 2. The end of said body, which is thus spaced from the jaw 5 forms a fulcrum 6 upon which a aw 7, paire-d with the aw 5, is adapted to rock. The jaw 7 rests substantially midway of its length upon the fulcrum G and the jawengaging surface of said fulcrum is curved to form an approximate semi-cylinder transverse to the length of the engaged jaw `7, which surface establishes a rocking bearing for said jaw. i

To holdthe jaw 7 in its position of use, a

Serial No. 143,157.

pin 1() is extended between and carried by the projections 3 and 4, in spaced relation to the fulcrum member 6 and said pin is passed through an over-sized opening 11 formed in the jaw 7, transversely of its length. Said. pin is preferably headed at one end, as indicated at 12 and has its other end split` lengthwise as indicated 13, the split end portions being sufficiently spread to yieldably hold the pin in place. Each end of the jaw 7 has a pair of [langes 141 projecting oppositely laterally and the two end flanges at one or the other) side of said jaw will embrace the projection 4 in any operative position of the jaw on the body 1 to compel rocking of the jaw with the lever, in whichever direction the' latter may be swung.

When the rocking jaw is applied as shown :in full lines in Figure 3, the fulerum (ibears upon said jaw within a channel 15 extending transversely of the jaw and formed between pipe seats 16. A pipe 8 may then be engaged between the hooked jaw 5 and the 0pposing face of the jaw 7 the latter face having pipe receiving channels 17 in its end portions, which increase gradually in depth as they entend to the opposite ends of the jaw.

l/Vhen the position of the jaw 7 is reversed, as indicated in dash lines in Figure 3, the face of said jaw having the channels 17 seats on the fulcrum member (i, substantially inidway of the length of said face and the pipe seats 16 now project toward the hooked jaw 5 and reduce the space between the two jaws so that a. relatively small pipe such as is indicated at 9 may be operatively engaged.

Preferably the pipe seats 6 are formed with pipe engaging channels 18 which increase in depth gradually from the inner to the outer edges of said seats.

The channels 17 and 18 when receiving a pipe'which is being bent, insure a considerable area of contact between the rocking 'aw and the pipe, so as to minimize the possi ility of the pipe being dented by said jaw.

ln the use of the described tool, the pipe to be bent is first firmly secured in a vice 0r the like (not shown). The disclosed tool is then applied, preferably at a point adjacent to the vice, the jaws 5 and 7 being oppositely en gaged with the pipe. rlhe lever 2 is now swung in the direction in which the pipe is to be bent, causing the jaw 6 to bear at one of its endsnpon the pipe and bringing the opposite end portion of the jaw 7 into engagement with the other side of the pipe. Responding under powerful leverage to'these reverselyV acting pressures, the pipe will be slightly bent. The tool may nowrbe shiftedslightly lengthwise ofthe pipe and the described bendin'goperation repeated, and by further repetitions, the curvature of the pipe may be increased to any desired extent.

It is to be noted that the bending operation places no strain upon the pin 10, which serves merely to maintain the jaw 7 in assembled relation'jvvith the remaining parts of the tool.

- Having thus described my invention, I

i 1 claim 1 anda c'o-acting rocking jaw 'fulcrumed betweensaid hooked jaw and body and reversible to vary its spaced relation to said hooked uw 2. A pipe bendercomprising a body round- `edat one end `to form a fulcruin, a projection from said end hooked to forni a pipe-engaging jaw, a coacting jaw adapted tov be mounted to rock on said fulj ciuin member, and liavingopposite faces for seating upon said member in alternative positions of said jaw, said jaw being diierentially spaced from said hooked aw in said positions.

3. A pipe bender comprisin a body having one of its ends fashioned to orm a fulcruin member, a projection from said end hooked to form a pipe engaging jaw, and a eo-acting rocking jaw having opposite faces engageable with said fulcruin member in alternative positions of said jaw, one of said faces being transversely channeled to receive said fulcruin member whereby the two jaws are differentiallv spaced in said positions.

4. A pipe bender comprising a body having at one'end a pair of spaced projections, one of which is hooked in spaced relation to said end to forni a pipe engaging jaw, said body being rounded between said projections to form a fulcrum bearing, a rocking jaw engaging upon said fulcruin bearing between said projections and co-acting with the hooked jaw to engage a pipe, the surface ofi said rocking jaw engaging said fulcruin ineinber being substantially flat, and a retainer member for said rocking aw exten ding freely through said jaw and terminally mounted in said paired projections.

In witness whereof' I hereunto set m hand.

BENJAMIN CLARK LOVERI GE. 

